Question

An embryo sac is formed from a nuclear cell. what is it called?

Answer 1

It consists of three parts: The integument, forming its outer layer, the nucellus (or remnant of the megasporangium), and the female gametophyte (formed from a haploid megaspore) in its center. The female gametophyte — specifically termed a megagametophyte— is also called the embryo sac in angiosperms.

Answer 2

Answer:

An embryo sac is formed directly from a nucellar cell. The development of embryo directly from nucellar cell is called apospory (development of the gametophyte directly from the sporophyte without meiosis)